Calc: How to hide the popup of cell content. [closed]

In order to see the relations between cells I click on a cell and then into the input field of the formula bar. That makes the connections visible, by showing colorized handles. At the same time the formula of the selected cell pops up and covers some of these handles. How can I suppress this formula popup? This information is redundant anyhow, the formula ist shown in the input field of the formula bar.